
A torque multiplier is a tool used to provide a mechanical advantage in applying torque to turn bolts, nuts or other items designed to be actuated by application of torque, such as the actuation of valves, particularly where there are relatively high torque requirements. Torque multipliers are often used instead of leveraged extended handles,often...
Found on
http://en.wikipedia.org/wiki/Torque_multiplier

A gearbox used to increase the torque produced by a small hand wrench.
Found on
http://www.boltscience.com/pages/glossary.htm
No exact match found.